Clock in multisim

[tss1410]

Hello. I am building a digital clock for a school assignment, and i need help with constructing the clock in multisim.
Check this link for what i have done so far. http://www.mediafire.com/download/e1r2vd2rssdcdlj/Design1.ms11

I am going to extend this circuit, by adding a stop, start and reset button.
And, i need to be able to edit the Hz from any Hz to 1 Hz. An circuit that can 30Hz to 1Hz or 60Hz to 1Hz and so on.

We can use the circiut SN74LS92N to do this.

Can someone help me with this?

 

[dorke]

Welcome to EP.
Please post directly here a pdf file or JPEG

 

[Miguel Lopez]

74LS92 can be used. But for a digital clock it is not the best choice.

For minutes and seconds counters, I suggest you to use 74LS90 or CD4518. CMOS is always a better choice, cause when it is battery-run, (in the case of power failure), CMOS demands less current than TTL (and I mean REALLY LESS), so batteries last longer.

For the hours counter, you can use 74LS192

I will start a project soon about building a digital clock, and those are the chips that I intend to use.